Publication Index
(in / )
2018

Dark quarkonium formation in the early universe. PDF
Michael Geller, Sho Iwamoto, Gabriel Lee, Yael Shadmi, and Ofri Telem.JHEP 1806 (2018) 135[arXiv:1802.07720]
2017

Probing minimal SUSY scenarios in the light of muon g−2 and dark matter. PDF
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Keisuke Yanagi.JHEP 1706 (2017) 031[arXiv:1704.05287] 
Tagging new physics with charm. PDF
Sho Iwamoto, Gabriel Lee, Yael Shadmi, and Yaniv Weiss.JHEP 1709 (2017) 114[arXiv:1703.05748]
2016

Heavy bino dark matter and collider signals in the MSSM with vectorlike fourthgeneration particles. PDF
Mohammad Abdullah, Jonathan L. Feng, Sho Iwamoto, and Benjamin Lillard.Phys. Rev. D 94 (2016) 095018[arXiv:1608.00283] 
Diphoton signals from colorless hidden quarkonia. PDF
Sho Iwamoto, Gabriel Lee, Yael Shadmi, and Robert Ziegler.Phys. Rev. D 94 (2016) 015003[arXiv:1604.07776] 
LHC benchmarks from flavored gauge mediation. PDF
Niv Ierushalmi, Sho Iwamoto, Gabriel Lee, Vera Nepomnyashy, and Yael Shadmi.JHEP 1607 (2016) 058[arXiv:1603.02637]
2015

Longlived sleptons at the LHC and a 100 TeV proton collider. PDF
Jonathan L. Feng, Sho Iwamoto, Yael Shadmi, and Shlomit Tarem.JHEP 1512 (2015) 166[arXiv:1505.02996]
2014

CPsafe Gravity Mediation and Muon g−2. PDF
Sho Iwamoto, Tsutomu T. Yanagida, and Norimi Yokozaki.PTEP 2015 073B01[arXiv:1407.4226]
2013

Reconstructing Supersymmetric Contribution to Muon Anomalous Magnetic Dipole Moment at ILC. PDF
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, Teppei Kitahara, and Takeo Moroi.Phys. Lett. B 728 (2014) 274‒281[arXiv:1310.4496] 
Recent Result of the AMS02 Experiment and Decaying Gravitino Dark Matter in Gauge Mediation. PDF
Masahiro Ibe, Sho Iwamoto, Shigeki Matsumoto, Takeo Moroi, and Norimi Yokozaki.JHEP 1308 (2013) 029[arXiv:1304.1483] 
Muon g−2 vs LHC in Supersymmetric Models. PDF
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Takahiro Yoshinaga.JHEP 1401 (2014) 123[arXiv:1303.4256]
2012

Gauge Mediation Models with Vectorlike Matters at the LHC. PDF
Motoi Endo, Koichi Hamaguchi, Kazuya Ishikawa, Sho Iwamoto, and Norimi Yokozaki.JHEP 1301 (2013) 181[arXiv:1212.3935] 
Comment on the CMS search for chargeasymmetric production of W′ boson in ttbar + jet events. PDF
Motoi Endo and Sho Iwamoto.Phys. Lett. B 718 (2013) 1070‒1072[arXiv:1207.5900] 
Vacuum Stability Bound on Extended GMSB Models. PDF
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Norimi Yokozaki.JHEP 1206 (2012) 060[arXiv:1202.2751]
2011

Higgs mass and muon anomalous magnetic moment in the U(1) extended MSSM. PDF
Motoi Endo, Koichi Hamaguchi, Kazunori Nakayama, Sho Iwamoto, and Norimi Yokozaki.Phys. Rev. D 85 (2012) 095006[arXiv:1112.6412] 
Higgs mass, muon g−2, and LHC prospects in gauge mediation models with vectorlike matters. PDF
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Norimi Yokozaki.Phys. Rev. D 85 (2012) 095012[arXiv:1112.5653] 
LHC Dijet Signals in New Physics Models for Top Forward–Backward Asymmetry. PDF
Motoi Endo and Sho Iwamoto.[arXiv:1110.0014] 
Higgs Mass and Muon Anomalous Magnetic Moment in Supersymmetric Models with VectorLike Matters. PDF
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Norimi Yokozaki.Phys. Rev. D 84 (2011) 075017[arXiv:1108.3071] 
Stau Kinks at the LHC. PDF
Shoji Asai, Yuya Azuma, Motoi Endo, Koichi Hamaguchi, and Sho Iwamoto.JHEP 1112 (2011) 041[arXiv:1103.1881]
2009

Lepton Flavor Violation and Cosmological Constraints on Rparity Violation. PDF
Motoi Endo, Koichi Hamaguchi, and Sho Iwamoto.JCAP 1002 (2010) 032[arXiv:0912.0585]
Articles in Proceedings

LHC SUSY searches after the Higgs discovery: respecting the muon g−2. (in proceedings) PDF
Sho Iwamoto.SLAC eConf C130213.1 (2013) 15‒21[arXiv:1304.5171] 
Muon g−2 anomaly and 125 GeV Higgs : Extra vectorlike quark and LHC prospects. (in proceedings) PDF
Sho Iwamoto.AIP Conf. Proc. 1467 (2012) 57‒61[arXiv:1206.0161]
Articles in Reports

Physics at a 100 TeV pp collider: beyond the Standard Model phenomena. (in report) PDF
T. Golling, M. Hance, P. Harris, M. L. Mangano, et al. (eds.)Chapter 3 of the “Physics at the FCChh” Report[arXiv:1606.00947]
Theses
 Dissertation (2013): Supersymmetry after the Higgs discovery and its LHC phenomenology. PDF[arXiv:1305.0790]
 Magisterial thesis (2010): Supersymmetry without RParity: Its Phenomenology. PDF
 Undergrad work (2008; in japanese): Linear Collider –to> Relic Density. PDF
Undergrad work (2008; in japanese): Linear Collider –to> Relic Density
The work I did in the “Undergraduate Research” course; this work was supervised by Dr. Masako Iwasaki, a lecturer of Aihara Lab. (lab on experimental particle physics).
We followed the work by Feng and Peskin and showed how precisely we can measure the mass of the superpaticles with the International Linear Collider.
 Author
 Sho Iwamoto.
 https://www.mishoweb.com/phys/papers/bachelor_thesis_080212.pdf
 Talk
 30 Mar. 2008 as a talk for public in Generation86 Graduation Work Exhibition [slides]
Magisterial thesis (2010): Supersymmetry without RParity: Its Phenomenology
 Author
 Sho Iwamoto.
 https://www.mishoweb.com/phys/papers/master_thesis.pdf
 Talk
 1 Feb. 2010 in Defense for Master's Degree [slides]
Dissertation (2013): Supersymmetry after the Higgs discovery and its LHC phenomenology
 Author
 Sho Iwamoto.
 Preprint
 arXiv:1305.0790
 https://www.mishoweb.com/phys/papers/dissertation.pdf
 NDLOPAC
 https://id.ndl.go.jp/bib/025097907
 Talk
 15 Jan. 2013 in Dissertation Defense [slides]
Lepton Flavor Violation and Cosmological Constraints on Rparity Violation
 Authors
 Motoi Endo, Koichi Hamaguchi, and Sho Iwamoto.
 Journal
 JCAP 1002 (2010) 032 [arXiv:0912.0585] PDF
 Talk
 4 Dec. 2009 in JSPS Fellowship Screening Interview [slides]
 Talk
 1 Feb. 2010 in Defense for Master's Degree [slides]
 Talk
 20 Feb. 2010 in KEKPH 2010 [slides]
 Talk
 4 Oct. 2010 in 2nd Bethe Center Workshop [slides]
Stau Kinks at the LHC
 Authors
 Shoji Asai, Yuya Azuma, Motoi Endo, Koichi Hamaguchi, and Sho Iwamoto.
 Journal
 JHEP 1112 (2011) 041 [arXiv:1103.1881] PDF
 Talk
 20 Aug. 2011 in YONUPA Summer School 2011 [slides]
 Poster
 7‒8 Sep. 2011 in IPMU–YITP School on Monte Carlo Tools for LHC [poster file]
 Talk
 16 Jan. 2012 as a seminar talk at University of Bonn [slides]
 Talk
 30 Jan. 2012 as a seminar talk at DESY [slides]
 Talk
 27 Feb. 2012 in KEKPH 2012 [slides]
Higgs Mass and Muon Anomalous Magnetic Moment in Supersymmetric Models with VectorLike Matters
In 2012 summer, we had some 2σ indication of 130‒140 GeV Higgs boson. It was extremely heavier than expected, and if we assume the MSSM framework, such mass cannot be achieved without very very fine tuning, which was of a great depression. This depression stands out with taking the muon anomaly into consideration, which requires a much lighter SUSY scale.
So \n\n\nwe extend the MSSM with , or extra vectorlike quarks. Such extra matters yields coupling, which drastically lifts up the Higgs mass with the same mechanism as , and with the help we can keep the SUSY scale lighter to achieve the SUSY explanation of the muon anomaly.
The 130140 GeV Higgs signal disappeared soon as is usual for 2σ excesses, but this framework was used in the next paper.
 Authors
 Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Norimi Yokozaki.
 Journal
 Phys. Rev. D 84 (2011) 075017 [arXiv:1108.3071] PDF
 Related work
 [1112.5653] a followup paper on LHC phenomenology [arXiv] PDF
 Related work
 [1202.2751] a followup paper on vacuum stability [arXiv] PDF
 Related work
 [1212.3935] a followup paper on further LHC phenomenology [arXiv] PDF
 Related work
 [1112.6412] a similar work with extra U(1) gauge symmetry [arXiv] PDF
 Talk
 18 Feb. 2012 in Physics opportunities with LHC at 7 TeV [slides]
 Talk
 20 Feb. 2012 in Winter Toyama 2012, phenomenology & cosmology workshop [slides]
 Talk
 9 Mar. 2012 in Sapporo Winter School 2012 [slides]
 Talk
 15 Mar. 2012 in GUT2012 [slides]
 Talk
 19 Apr. 2012 as a seminar talk at Niigata U. and U. Toyama [slides]
 Talk
 6 Aug. 2012 in YONUPA Summer School 2012 [slides]
 Talk
 8 Feb. 2013 as a seminar talk at Kyushu University [slides]
 Talk
 1 May 2013 as a seminar talk at Kavli IPMU, U. Tokyo [slides]
LHC Dijet Signals in New Physics Models for Top Forward–Backward Asymmetry
 Authors
 Motoi Endo and Sho Iwamoto.
 Preprint
 arXiv:1110.0014 PDF
 Poster
 13 Aug. 2011 in SI2011 (phenomenology)
Higgs mass, muon g−2, and LHC prospects in gauge mediation models with vectorlike matters
 Authors
 Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Norimi Yokozaki.
 Journal
 Phys. Rev. D 85 (2012) 095012 [arXiv:1112.5653] PDF
 Related work
 [1108.3071] the seminal work in which this scenario is introduced [arXiv] PDF
 Related work
 [1212.3935] a followup paper on further LHC phenomenology [arXiv] PDF
 Talk
 18 Feb. 2012 in Physics opportunities with LHC at 7 TeV [slides]
 Talk
 20 Feb. 2012 in Winter Toyama 2012, phenomenology & cosmology workshop [slides]
 Talk
 9 Mar. 2012 in Sapporo Winter School 2012 [slides]
 Talk
 15 Mar. 2012 in GUT2012 [slides]
 Talk
 19 Apr. 2012 as a seminar talk at Niigata U. and U. Toyama [slides]
 Talk
 6 Aug. 2012 in YONUPA Summer School 2012 [slides]
 Talk
 8 Feb. 2013 as a seminar talk at Kyushu University [slides]
 Talk
 1 May 2013 as a seminar talk at Kavli IPMU, U. Tokyo [slides]
Higgs mass and muon anomalous magnetic moment in the U(1) extended MSSM
This work is, similar to the previous work, a study on a model which can realize the simultaneous explanation of the Higgs mass and the muon anomaly. In this paper we extend the MSSM with an extra U(1) gauge symmetry. We first see that the simultaneous realization is certainly achieved, and then LHC phenomenology is discussed.
 Authors
 Motoi Endo, Koichi Hamaguchi, Kazunori Nakayama, Sho Iwamoto, and Norimi Yokozaki.
 Journal
 Phys. Rev. D 85 (2012) 095006 [arXiv:1112.6412] PDF
 Related work
 [1108.3071] a similar work with extra vectorlike quarks [arXiv] PDF
 Talk
 19 Apr. 2012 as a seminar talk at Niigata U. and U. Toyama [slides]
 Talk
 8 Feb. 2013 as a seminar talk at Kyushu University [slides]
 Talk
 1 May 2013 as a seminar talk at Kavli IPMU, U. Tokyo [slides]
Vacuum Stability Bound on Extended GMSB Models
 Authors
 Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Norimi Yokozaki.
 Journal
 JHEP 1206 (2012) 060 [arXiv:1202.2751] PDF
 Talk
 18 Feb. 2012 in Physics opportunities with LHC at 7 TeV [slides]
 Talk
 20 Feb. 2012 in Winter Toyama 2012, phenomenology & cosmology workshop [slides]
 Talk
 9 Mar. 2012 in Sapporo Winter School 2012 [slides]
 Talk
 15 Mar. 2012 in GUT2012 [slides]
 Talk
 19 Apr. 2012 as a seminar talk at Niigata U. and U. Toyama [slides]
 Talk
 6 Aug. 2012 in YONUPA Summer School 2012 [slides]
 Talk
 8 Feb. 2013 as a seminar talk at Kyushu University [slides]
 Talk
 1 May 2013 as a seminar talk at Kavli IPMU, U. Tokyo [slides]
Muon g−2 anomaly and 125 GeV Higgs : Extra vectorlike quark and LHC prospects (in proceedings)
 Author
 Sho Iwamoto.
 Journal
 AIP Conf. Proc. 1467 (2012) 57‒61 [arXiv:1206.0161] PDF
Comment on the CMS search for chargeasymmetric production of W′ boson in ttbar + jet events
This article contains comments on a recent paper(1206.3921) by the CMS collaboration, where an inclusive search for new physics in events. This search targets an extra boson which couples to the top and down quarks, which motivated by the Tevatron top forwardbackward asymmetry. We first tried to interpret their results on plane, but our calculated cross section does not match theirs, and we consider this possibility. This is a very short paper with 7 pages; especially the text is just for 3 pages. We wrote up this article in 3 days. Actually the PC spent more time on the calculation than I spent on the writing…
 Authors
 Motoi Endo and Sho Iwamoto.
 Journal
 Phys. Lett. B 718 (2013) 1070‒1072 [arXiv:1207.5900] PDF
Gauge Mediation Models with Vectorlike Matters at the LHC
 Authors
 Motoi Endo, Koichi Hamaguchi, Kazuya Ishikawa, Sho Iwamoto, and Norimi Yokozaki.
 Journal
 JHEP 1301 (2013) 181 [arXiv:1212.3935] PDF
 Related work
 [1108.3071] the seminal work in which this scenario is introduced [arXiv] PDF
 Related work
 [1112.5653] a previous work on LHC phenomenology of this scenario [arXiv] PDF
 Talk
 18‒19 Oct. 2016 as an invited talk in Search for New Physics through the Higgs Boson [slides]
Muon g−2 vs LHC in Supersymmetric Models
 Authors
 Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Takahiro Yoshinaga.
 Journal
 JHEP 1401 (2014) 123 [arXiv:1303.4256] PDF
 Talk
 13 Feb. 2013 in HPNP 2013 [slides]
 Talk
 1 May 2013 as a seminar talk at Kavli IPMU, U. Tokyo [slides]
 Talk
 27 Aug. 2013 in SUSY 2013 [slides]
 Talk
 7 Dec. 2013 in ATLASJapan workshop [slides]
 Talk
 17 Dec. 2014 as a seminar talk at Joint particle physics meeting (Tel Aviv U.) [slides]
 Talk
 2 Sep. 2015 as a seminar talk at University of California·Irvine [slides]
 Talk
 18‒19 Oct. 2016 as an invited talk in Search for New Physics through the Higgs Boson [slides]
 Talk
 30 Apr. 2018 as a seminar talk at Korea University [slides]
 Talk
 1 May 2018 as a seminar talk at KIAS [slides]
 Talk
 4 May 2018 in KAIST–KU–PNU Joint Workshop [slides]
 Talk
 22 Aug. 2018 in Beyond Standard Model: Where do we go from here? [slides]
Recent Result of the AMS02 Experiment and Decaying Gravitino Dark Matter in Gauge Mediation
 Authors
 Masahiro Ibe, Sho Iwamoto, Shigeki Matsumoto, Takeo Moroi, and Norimi Yokozaki.
 Journal
 JHEP 1308 (2013) 029 [arXiv:1304.1483] PDF
 Talk
 20 Nov. 2013 in PASCOS 2013 [slides]
LHC SUSY searches after the Higgs discovery: respecting the muon g−2 (in proceedings)
 Author
 Sho Iwamoto.
 Journal
 SLAC eConf C130213.1 (2013) 15‒21 [arXiv:1304.5171] PDF
 Original work
 1303.4256
Reconstructing Supersymmetric Contribution to Muon Anomalous Magnetic Dipole Moment at ILC
 Authors
 Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, Teppei Kitahara, and Takeo Moroi.
 Journal
 Phys. Lett. B 728 (2014) 274‒281 [arXiv:1310.4496] PDF
 Talk
 13 Feb. 2014 in BURI 2014 [slides]
 Talk
 21 Jul. 2014 in ILC Summer Camp 2014 [slides]
 Talk
 22 Jul. 2014 in ILC Summer Camp 2014 [slides]
CPsafe Gravity Mediation and Muon g−2
SUSY is a good candidate to solve the discrepancy of muon between the experimental result and theoretical expectations. To this end, noncolored SUSY particles should be as light as O(100) GeV, while the Higgs boson mass suggests colored SUSY particles should be heavier than 1 TeV. This separation can be explained by nonuniversal gaugino mass, which though involves the risk of CPviolation because of phase misalignments among the gaugino masses. To solve this problem, we built a model which has no CPviolation to realize the nonuniversal gaugino mass.
This work was in collaboration with Tsutomu and Norimi; we were heading back from the cafeteria and talking the model to solve the anomaly; I was interested in gaugino mediation and told Tsutomu it was good, but he realized that CPviolation which the model involves is critically bad. Then we stop thinking, but a day Tsutomu suddenly came with a model. Norimi and I analyzed the model, and confirmed that the model fits to my purpose to solve the anomaly.
 Authors
 Sho Iwamoto, Tsutomu T. Yanagida, and Norimi Yokozaki.
 Journal
 PTEP 2015 073B01 [arXiv:1407.4226] PDF
 Talk
 30 Jul. 2014 in Progress of Particle Physics 2014 [slides]
 Talk
 25 Aug. 2014 in SI2014 [slides]
 Talk
 17 Dec. 2014 as a seminar talk at Joint particle physics meeting (Tel Aviv U.) [slides]
Longlived sleptons at the LHC and a 100 TeV proton collider
This work shows how far we can search for longlived charged particles in future colliders. To answer this question is, actually, not very interesting; just do Monte Carlo simulation, and that’s all. However, in this work, we realized two features at the future collider as important; one is the radiative energy loss of muons, which can only be seen in such high energy, and the other is the fact that we should carefully treat the momentum resolution in such high energy.
This work was originated in May 2014; I thought I could finish before long, but as our Monte Carlo simulation as well as statistical treatment was done very seriously, and the manuscript writing was with much argument, it finally took one year. (and also, as actually the biggest reason, because I moved from Japan to Israel in this period.)
 Authors
 Jonathan L. Feng, Sho Iwamoto, Yael Shadmi, and Shlomit Tarem.
 Journal
 JHEP 1512 (2015) 166 [arXiv:1505.02996] PDF
 Talk
 24 Aug. 2015 in SUSY 2015 [slides]
 Talk
 13 Dec. 2015 in Israel Physical Society 61st annual meeting [slides]
 Talk
 18‒19 Oct. 2016 as an invited talk in Search for New Physics through the Higgs Boson [slides]
 Talk
 18 Jan. 2017 in 1st FCC Physics Workshop [slides]
 Talk
 27 Aug. 2017 in SI2017 [slides]
 Talk
 18 Sep. 2017 as a seminar talk at National Taiwan University [slides]
 Talk
 2 Nov. 2017 as a seminar talk at Tohoku University [slides]
LHC benchmarks from flavored gauge mediation
 Authors
 Niv Ierushalmi, Sho Iwamoto, Gabriel Lee, Vera Nepomnyashy, and Yael Shadmi.
 Journal
 JHEP 1607 (2016) 058 [arXiv:1603.02637] PDF
 Talk
 24 Aug. 2016 in Effective Field Theories as Discovery Tools [slides]
Diphoton signals from colorless hidden quarkonia
 Authors
 Sho Iwamoto, Gabriel Lee, Yael Shadmi, and Robert Ziegler.
 Journal
 Phys. Rev. D 94 (2016) 015003 [arXiv:1604.07776] PDF
Physics at a 100 TeV pp collider: beyond the Standard Model phenomena (in report)
 Editors
 T. Golling, M. Hance, P. Harris, M. L. Mangano, et al.
 Journal
 Chapter 3 of the “Physics at the FCChh” Report [arXiv:1606.00947] PDF
 Original work
 1505.02996
Heavy bino dark matter and collider signals in the MSSM with vectorlike fourthgeneration particles
 Authors
 Mohammad Abdullah, Jonathan L. Feng, Sho Iwamoto, and Benjamin Lillard.
 Journal
 Phys. Rev. D 94 (2016) 095018 [arXiv:1608.00283] PDF
 Talk
 15 Sep. 2016 as a seminar talk at Osaka University [slides]
 Talk
 20 Sep. 2016 as a seminar talk at The University of Tokyo [slides]
 Talk
 18‒19 Oct. 2016 as an invited talk in Search for New Physics through the Higgs Boson [slides]
 Talk
 7 Nov. 2016 as a seminar talk at DAMTP, U. Cambridge [slides]
 Talk
 10 Nov. 2016 as a seminar talk at IPPP, Durham U. [slides]
 Talk
 25 Dec. 2016 in Israel Physical Society 62nd annual meeting [slides]
 Talk
 31 Jan. 2018 as a seminar talk at Internal meeting of ATLAS SUSY WG (CERN) [slides]
Tagging new physics with charm
 Authors
 Sho Iwamoto, Gabriel Lee, Yael Shadmi, and Yaniv Weiss.
 Journal
 JHEP 1709 (2017) 114 [arXiv:1703.05748] PDF
 Talk
 3 May 2017 as a seminar talk at Joint particle physics meeting (Weizmann Institute) [slides]
 Talk
 25 Oct. 2017 as an invited talk in Workshop on Beyond Standard Model and the Early Universe [slides]
Probing minimal SUSY scenarios in the light of muon g−2 and dark matter
 Authors
 Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, and Keisuke Yanagi.
 Journal
 JHEP 1706 (2017) 031 [arXiv:1704.05287] PDF
Dark quarkonium formation in the early universe
 Authors
 Michael Geller, Sho Iwamoto, Gabriel Lee, Yael Shadmi, and Ofri Telem.
 Journal
 JHEP 1806 (2018) 135 [arXiv:1802.07720] PDF